SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zum-isaak.ch
SSL/TLS Certificate
SSL/TLS Certificate for zum-isaak.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- zum-isaak.ch
- Valid from
- Oct 29, 2026
- Valid until
- Jan 27, 2027 (74 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06799A3350281200EDFDE20632D38C36E9EC
- SHA-256 fingerprint
- 65:09:3F:4B:9D:6F:CA:10:10:82:3B:C6:C4:46:BC:8D:F5:5B:D2:B4:09:FC:03:4A:2D:E4:9E:03:C5:AA:26:56
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Nov 5, 2026.
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Uptime
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DNS changes
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TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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